These entries are queried from radb.net using whois, you can try my project getting these.
:AS137457 route: 103.108.253.0/24 origin: AS137457 descr: BHP BILLITON IRON ORE PTY. LTD. 125 St. Georges Terrace mnt-by: MAINT-BBIOPL-AU last-modified: 2018-11-02T01:36:15Z source: APNIC rpki-ov-state: not_found # No ROAs found, or RPKI validation not enabled for source route: 145.34.152.0/21 origin: AS137457 mnt-by: BHP_US mnt-by: au-bhpbilliton-1-mnt created: 2020-10-01T03:31:29Z last-modified: 2020-10-01T03:31:29Z source: RIPE remarks: **************************** remarks: * THIS OBJECT IS MODIFIED remarks: * Please note that all data that is generally regarded as personal remarks: * data has been removed from this object. remarks: * To view the original object, please query the RIPE Database at: remarks: * http://www.ripe.net/whois remarks: **************************** rpki-ov-state: valid